The minecraft:apply_suspicious_stew_effects_from_item action applies the effects from the minecraft:suspicious_stew_effects data component on an item stack to an entity. The action is unsuccessful if the entity does not exist, if the entity is not a living entity or if the item stack does not contain the minecraft:suspicious_stew_effects data component.

{
  "type": "minecraft:apply_suspicious_stew_effects_from_item",
  "entity": "this"
}